A working IBM WebSphere MQ installation. If building the extension the SDK for IBM WebSphere MQ is also required.
Note: Be aware that when running against a IBM WebSphere MQ Client installation some methods are not available. This is not a problem of the extension but just the way the WebSphere MQ Client Interface works.
Installation requirements on non windows platforms
Build the extension and put it in the PHP extension directory.
Installation requirements on Windows
No additional requirements.